JPS62234743A - Operation device for work vehicle - Google Patents

Abstract

PURPOSE:To omit operation members and improve ease of operation of action parts by detecting various operation positions of an operation lever by means of respectively corresponding detectors and controlling various action parts according to the detected results by means of a control part. CONSTITUTION:Arranging an operation lever near a steering wheel 3, detectors Sa-Se are installed respectively corresponding to various operation positions of the operation lever. According to the signals from the detectors Sa-Se, commands are outputted from a control part 26 to a group of action parts K to control various devices 6-25 into specified conditions. For example, when the operation lever is operated to a running position, the control part 26 controls the action parts K respectively to change a throttle device 6 to a half open throttle engine operation, a running speed change device 10 to a running speed, a PTO speed change device to a PTO clutch off position, an elevator device 21 to a lift position, and a rolling control device 25 to a position where a work device becomes parallel with a tractor.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an operating device for a working vehicle, in which a throttle device can be operated by operating one operating lever to an operating position such as a traveling position or a working position. 11. When the travel transmission and related operating parts are in a predetermined state V. Deposit 1 type ηAko〉
This eliminates the need for individual operations of the accelerator pedal, gear shift lever, etc., and can be applied to work vehicles such as tractors, combines, rice transplanters, and forklifts.

[Conventional technology]

Traditional work vehicles - accelerator pedal, clutch pedal,
It is a structure in which operating members corresponding to each operating part such as a gear shift lever, engine, running latch, transmission, etc. must be moved to a predetermined position and operated one by one depending on the running operation or work operation. .

[Problem that the invention seeks to solve]

With the conventional structure described above, a large number of operating members such as the accelerator pedal, clutch pedal, and gear shift lever must be operated quickly in a short period of time each time a vehicle is driven, requiring a great deal of skill and attentiveness. There are many problems caused by incorrect operation.

[Means for solving problems]

This invention proposes an easy-to-operate operating device that eliminates the need for individual operations such as the accelerator pedal and gear shifting/<-%. +1?, -1 operating lever (4) should be provided so that it can be operated at each operating position of gt (el, etc.)
and - the respective operating position detectors (Sa) (Sb)... capable of detecting the respective operating positions +alfbl..., the throttle device (6), the traveling transmission device (10, the brake device 4t21, the rolling control device) In order to switch the operating parts such as (c) to a predetermined state based on the detection operation of the respective operation position detectors <5a), (sb), etc., a control is provided to output a command to the operating parts. This is an operating device for a work vehicle, characterized in that it has a part (3).

[Effect]

The operating levers (4) are at their respective operating positions ft1altb+...
・When one of
outputs a command to switch the corresponding operating section (I<) of the throttle device (6), traveling transmission aα, etc. to a predetermined state, and when the operating section (5) is designated by the operating lever (4). It will be operated to the operating position.

〔Example〕

Next, one embodiment of the present invention will be described based on the drawings. 1st
Fig. 2 shows the control block diagram, Fig. 2 shows the 41111 diagram of the tractor (1) as one side of the work vehicle, Fig. 3 shows the plan view of the vicinity of the driver's seat (2), Fig. 4 shows the gear As shown in the diagram, an operating lever (4) in an H-shaped (or H-shaped, not shown) pattern is provided near the handle (3), and each operating position of the H-shaped
For example, correspond to the traveling position, the working position, the rear value position, the one-turn position, and the neutral position, and set the respective operating positions #(al(bl)
When the operation lever (3) is operated in fcl (dl (e)), if fllj is turned on and the detection operation is performed, the operation position detector (Sa) (8b) (8b) constituted by something like a limit switch is activated. Sc) (Sd) (S-) are provided, respectively.

Operating part! As Kl, there is a throttle device (6) that controls the fuel of the engine (5), a latch (force) that performs running, and a traveling transmission system Roo+ consisting of a main transmission section (8) and an auxiliary transmission section (9) for traveling shifting; Brake device α2 for applying brakes to wheel axle ++1!, PTO shaft (for transmitting 13ic power) P T U Cra 7 + (14) ) Knee P T 01K Speedff1t151 Collar 7”, C Ro P'rO The transmission (161) and the work machine (171) are suspended by the work machine connecting link mechanism, the lift cylinder + 19's lift piston (J), the lifting device that moves up and down by the in/out movement of the work machine (1181), and the work machine connecting link mechanism (1181). By extending and retracting the lift rod cylinder Q41, which connects the lower link ■ on the 1 side of the left and right lower links (721 (221) to the lift arm ring on the same side, the left and right tilting fences of the work equipment Q7+ are Each of the rolling control devices (c) is provided to control the rolling control device (3).The control unit (3), which is composed of, for example, a microcomputer, operates the operating lever (3) to the above-mentioned operating position such as the traveling position tal. Sometimes, throttle equipment! (6), traveling speed change bag fi
! (The operation +Ws unit such as 11 is configured to output a command to the corresponding operation unit unit so that it can be switched to a predetermined state. In other words, as illustrated in Table 1,
At the traveling position tal, the throttle device (6) is switched to the engine (
5) For half-open operation, set the travel gearbox I (II to travel speed)
PTO transmission! +16) to the off position of the PTO clutch αa, the lifting/lowering t2 position (211 to the raised position, and the rolling control device (c) to the position where the work machine is parallel to the tractor (1), respectively). It controls each of the above-mentioned operating parts, including working position 1t(b), backward position f+2(cl, turning position 9(di), and neutral position N(c!l).
Also, the explanation will be omitted for r-, but the respective operating parts will be controlled as shown in Table 1.

In the illustrated example of the handwriting chart, as shown in Figs. Latch pedal (so-called, ton speed setting device 翰, brake pedal 12!
- A lift lever for operating the elevator #Q1), a plowing depth setting device C11), and a left/right inclination setting device (2) are provided, respectively.

The predetermined states of the operating parts are 1, for example, the respective engine rotational speeds in engine idle operation, half-operation, etc.
The height above the ground at the elevated position f2+1 is input in advance to the control unit (2), and the traveling speed, working speed, etc. are set using the vehicle speed setting device (:!gJ). The value is set by the operator using the plowing depth setting device Gυ, and the left and right slope setting device G2.

Neutral position tel is H-shaped pattern (or H-shaped pattern)
It is provided at the branching point of each operating section (Kl is the engine (5) idle link operation, latch off for running.

The engine (5), traveling transmission (11, PTO transmission
Since the te, etc. operate at low speed, it is necessary to change the operating position between the operating positions, for example, from the traveling state to the working state, or from the working state to the reverse state. It will be carried out extremely smoothly.

The ``lateral part■'' also has a neutral position (in addition to
4), and when the brake pedal is depressed, the operation part (K) such as the throttle device (6) is moved to the same state as in the neutral position tel, leaving the operation lever (4) as it is.
When the brake pedal is released and the accelerator pedal is depressed for more than a predetermined period of time (if the accelerator pedal is depressed by mistake) (To prevent accidents), it is configured to output a command to each operating unit (r(l) to return to the original operating position).

Next, as shown in the gear diagram exemplified in Fig. 3, the main transmission section (8) and the sub-transmission section (9) are configured to automatically engage each gear. Upper axis C3
5 and the conduction lower axis (to) are measured by the first rotation sensor (Sl) and the @2 rotation sensor (S2),
The shift position of each gear train is detected by a shift position tt sensor (not shown), and a memory storing the gear ratio of each gear train, the shift position sensor and a first rotation sensor (S[),
The rotation speeds of the gears that are to engage in meshing operation are calculated based on the detected value of the second rotation sensor (S2), and a shift operation is performed in which the rotation speeds of the gears are synchronized. The shift mechanism is configured to operate automatically.

In particular, in the embodiment shown in FIG. 3, the upper transmission shaft ω is forcibly rotated by a synchronization motor (371) so that the rotations of both gears are quickly synchronized.

To operate the operating lever (4) between the traveling position (at, reverse position R (from cl to working position 1b), and turning position 1dl, and between the 1st working position TBL and turning position (11),
Although it passes through the neutral position (el), the control unit (4) is configured so that the knife operated to the neutral position tel in a short period of time will not switch to the neutral state.The operating unit (6) ) is limited to the above example, and nothing (, or
[Effects of the Invention] The operating device for a work vehicle according to the present invention is configured as described above, and the operating device for operating the operating vehicle (4) is position (at
, working position # (by operating to the desired operating position such as bl, the throttle is set fff'f6), the traveling speed change bag [(
11. Since the operating parts of the PTO transmission device (such as the old model) can be controlled to a predetermined state, the operating members that are individually provided corresponding to the throttle device, traveling gear shift, etc. of conventional work vehicles can be sequentially operated. This invention eliminates the inconvenience of having to do this, making it less labor intensive, more accurate, and easier to operate.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 8g1 is a control block diagram, Fig. 2 is a side view of the tractor, Fig. 3 is a plan view of the main part of Fig. 2, and Fig. 4 is a gear diagram. Code explanation

Claims (1)

[Claims] One operating lever that can be operated to each operating position such as a traveling position, a working position, and a neutral position, each operating position detector that can detect each of the above operating positions, a throttle device, and a traveling transmission device. , a control section provided to output a command to the operating section of the brake device, rolling control device, etc. in order to switch the operating section to a predetermined state based on the detection operation of the respective operation position detector. An operating device for a work vehicle characterized by: